Automatic igniting device.



No. 633,|67. Patented se t..|9, I899.

c. F. P. STENDEBACH.

AUTOMATIC IGNITING DEVICE.

(Application filed Sept. 19, 1898.) (No Model.) 2 Sheets-Sheet 2.

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UNITED STATES.

PATENT OFFICE CARL FRIEDRICH PHILIPP STENDEBACH, OF LEIPSIC, GERMANY.

AUTOMATIC lGNlTlNG DEVICE.

srnclnicn'r'ionrormin part of Letters Patent No. 633,167, dated September 19, 1899. Application filed September 19. 1898. Serial No. 691,372. (No model.)

To-aZZ whom it may concern.-

Be it known that I, CARL FRIEDRICH PHIL- IPP STENDEBACH, a subject of the King of Saxony, and a resident of Leipsic, Kingdom of Saxony, Germany, have invented a certain new and useful Improved Automatic Igniting Device, 01": which the following is a full, clear, and exact description.

The present invention relates to automatic igniting devices for gas and other lamps; and it consists of the details of construction hereinafter set forth, and particularly pointed out in the claims. 7

In order to render the present specification more easily intelligible, reference is had to the accompanying drawings, in which similar numerals of reference denote similar parts throughout the several views.

Figures 1 and 1 are vertical sections through the device, showing the regulatingpiston in its two opposite end positions. Fig. 2 is a front elevation, Fig. 3 a plan, and Fig. 4 a detail elevation, of the piston.

The device consists of the housing 1, having the gas-inlet 2, the main channel 3, and a secondary channel 4, all communicating with the cylinder 5, in which the regulatingpiston 6 is adapted to slide. The piston 6 is hollow and provided with slots 7, 8, and 9,- which in certain positions of the piston establish communication with the channels 2, 3, and 4:, as also with the igniting-channel 10. The piston 6 is advantageously made of aluminium for the sake of lightness. At the upper end of the igniting-channel10isprovided the igniting or glow pill 11, of the known kind, which glows when the outflowing gas passes the same. Opposite the igniting-channel 10 is mounted a metal bar 12, adapted to expand in the well -known manner when heated, said bar being supported at its upper end on the carrier-bar 13, the lower end being connected to a pivotally-supported lever 1a, the free end of which engages a slot in the upper part of the piston at 16. The engage ment is such that when the piston 6 is raised the pin of the lever-arm 14. may slide in the slot of the part 16, the said piston being capable of being raised until the enlarged part 6 of the same-meets the top interior wall of the enlarged part of the cylinder, Fig. 1. The internal screw-thread 1 serves to secure the device to the nozzle of the gas-pipe, while the external thread 1 serves to support the burner, (incandescent buruer,0r the burnernozzle.)

The apparatus operates in the following manner: When the gas-cock is opened, the gases enter the channel 2, pass through the slot 7 into the interior of the piston 6, and then through slot 9 into the igniting-channel 10, escaping at the mouth of the same in the well-known manner, causing the pill 11 to glow and ignite the escaping gas. The flame heats the bar 12, causing the same to expand and depress one end of the lever 14.. This has the effect of lifting the piston 6 by means of the connection of the lever14 and the piston-rod 16. This action will raise the piston far enough to enable the slot 8 to establish communication with the channel 4. The gases may now pass from the piston to the channel 4, along the same, and underneath the enlarged piston 6 in the lower part of the cylinder at 1.

The pressure of the gas will raise the piston a corresponding distance-i. 6., until it strikes the upper cover of the enlarged cylinderwhich .movement will close the air-hole 17. The air thus driven out along the pipe 17 passes to the burner, so that any gas which may escape with the air will be consumed at the burner. The speed at which the piston is forced upward may be regulated by the regulating-screw 18, by means of which the channel t may be throttled. Vhen the piston is raised by the gas-pressure, communication will be established through the main channel 3 and slot 7, which is long enough to enable both channels 2 and 3 to communicate with it simultaneously. Thus the main channel 3 will communicate with the interior of the piston, allowing gas to flow to the burner and the incandescent body, where it will be nited by the half-flame burning at the mouth of theignitingtube. During this movement the piston will have reached its upper position and will close the igniting-channel 10, thus extinguishing the igniting-flame. It now the gas is cutoff from the main channel 2, the pressure on the main piston 6 will be relieved and the latter will fall by gravity into the position shown at Fig. 1, thus closing the channels 3 and 4 and opening the ignitingchannel 10 again, air enterin the cylinders 1 and 5 through the orifices 17and 19. The series of operations will be repeated as soon as the gas-cock is again opened.

I claim as my invention 1. An automatic gas-igniting apparatus, comprising a housing having an enlarged lower portion with a vent, a hollow piston within said housing and having an enlarged lower end and a slotted upper end extending above the housing, a branch leading from said housing and having a lower passage for connection with the service-pipe and an upper passage to the burner proper, a second tubular branch extending from the housing and loading to its lower portion, an ignitingburner connected to the housing, an ignitingpellet, a thermostat connected to the slotted upper end of the piston, the piston having in its body slots of such location and proportion that its tube is normally in connection only with the service-passage and the ignitingtube, and that after ignition of the ignitingflame, the piston will be raised to connect with the passage leading to the lower portion of the housing, then also with the passage to the burner proper, after which connection with the igniting-burner will be broken, substantially as described.

2. An automatic gas-igniting apparatus, comprising a housing having an enlarged lower portion with a vent, a hollow piston within said housing and having an enlarged lower end and a slotted upper end extending above the housing, a branch leading from said housing and having a lower passage for connection with the service-pipe and an upper passage to the burner proper, a second tubular branch extending from the housing and leading to its lower portion, an ignitingburner connected to the housing, an ignitingpellet, a thermostat connected to the slotted upper end of the piston, the piston having in its body slots of such location and proportion that its tube is normally in connection only with the service-passage and the ignitingtube, and that after ignition of the ignitingfiame, the piston will be raised to connect with the passage leading to the lower portion of the housing, then also with the passage to the burner, substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

CARL FRIEDRICH IIIILIPP STENDEBACII.

Witnesses:

HERM. SACK, RUDOLPH FRIoKE. 

